[Radiant] Admin config editor

[Stéphane BUSSO]

Ok, finally I used a trick. I created a new class to manage the table  
config and every thing is much more easier, thanks again to the  
extension facilities :p.

At the end, it needs only few lines, the abstract model controller  
does every thing !

Hope it's not a bad way, any comment is welcome.

again: http://www.rubynaut.net/svn/radiant/extensions/config_editor/